1

dc1850aabf

DEMO MANUAL

DC1850A-A/DC1850A-B

Description

LTC4366HTS8-1/LTC4366HTS8-2

Very High Voltage Surge Stopper

Demonstration Circuit 1850A showcases the LTC®4366

high voltage surge stopper in a 28V vehicular application.

DC1850A withstands inputs of up to 100VDC and input

transients of up to 250V while maintaining the output at

43.1V.Reversebatteryanderrantinputsofupto–100VDC

are blocked from reaching the output.

performance summary

DC1850A-A features latchoff behavior after a fault and is

reset by asserting the SHUTDOWN input high for at least

100µs. DC1850A-B features auto-retry 9 seconds after

tripping off in an overvoltage fault condition. The 9 second

delay can be interrupted by pulsing the SHUTDOWN input.

Design files for this circuit board are available at

http://www.linear.com/demo

L

, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input Range

Operating

DC Survival

1ms Transient

Load = 1.5A

18

–100

250

28

41

100

V

V

V

Output Regulation

41

43.1

45.3

V

Surge Timer

Cool-Down Timer

Input = 100V (DC1850A-B)

1.2

5.9

2.8

9

4.9

16

ms

s